HTTPResult
HTTP_get(struct HTTP_ctx *http, const char *url, HTTP_read_callback *cb) {
char *host, *path;
char *p1, *p2;
char hbuf[256];
int port = 80;
#ifdef CRYPTO
int ssl = 0;
#endif
int hlen, flen = 0;
int rc, i;
int len_known;
HTTPResult ret = HTTPRES_OK;
struct sockaddr_in sa;
RTMPSockBuf sb = {0};
http->status = -1;
memset(&sa, 0, sizeof(struct sockaddr_in));
sa.sin_family = AF_INET;
/* we only handle http here */
if (strncasecmp(url, "http", 4))
return HTTPRES_BAD_REQUEST;
if (url[4] == 's') {
#ifdef CRYPTO
ssl = 1;
port = 443;
if (!RTMP_TLS_ctx)
RTMP_TLS_Init();
#else
return HTTPRES_BAD_REQUEST;
#endif
}
p1 = strchr(url + 4, ':');
if (!p1 || strncmp(p1, "://", 3))
return HTTPRES_BAD_REQUEST;
host = p1 + 3;
path = strchr(host, '/');
hlen = path - host;
strncpy(hbuf, host, hlen);
hbuf[hlen] = '\0';
host = hbuf;
p1 = strrchr(host, ':');
if (p1) {
*p1++ = '\0';
port = atoi(p1);
}
sa.sin_addr.s_addr = inet_addr(host);
if (sa.sin_addr.s_addr == INADDR_NONE) {
struct hostent *hp = gethostbyname(host);
if (!hp || !hp->h_addr)
return HTTPRES_LOST_CONNECTION;
sa.sin_addr = *(struct in_addr *) hp->h_addr;
}
sa.sin_port = htons(port);
sb.sb_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (sb.sb_socket == -1)
return HTTPRES_LOST_CONNECTION;
i =
sprintf(sb.sb_buf,
"GET %s HTTP/1.0\r\nUser-Agent: %s\r\nHost: %s\r\nReferer: %.*s\r\n",
path, AGENT, host, (int) (path - url + 1), url);
if (http->date[0])
i += sprintf(sb.sb_buf + i, "If-Modified-Since: %s\r\n", http->date);
i += sprintf(sb.sb_buf + i, "\r\n");
if (connect
(sb.sb_socket, (struct sockaddr *) &sa, sizeof(struct sockaddr)) < 0) {
ret = HTTPRES_LOST_CONNECTION;
goto leave;
}
#ifdef CRYPTO
if (ssl) {
#ifdef NO_SSL
RTMP_Log(RTMP_LOGERROR, "%s, No SSL/TLS support", __FUNCTION__);
ret = HTTPRES_BAD_REQUEST;
goto leave;
#else
TLS_client(RTMP_TLS_ctx, sb.sb_ssl);
TLS_setfd(sb.sb_ssl, sb.sb_socket);
if (TLS_connect(sb.sb_ssl) < 0) {
RTMP_Log(RTMP_LOGERROR, "%s, TLS_Connect failed", __FUNCTION__);
ret = HTTPRES_LOST_CONNECTION;
goto leave;
}
#endif
}
#endif
RTMPSockBuf_Send(&sb, sb.sb_buf, i);
/* set timeout */
#define HTTP_TIMEOUT 5
{
SET_RCVTIMEO(tv, HTTP_TIMEOUT);
if (setsockopt
(sb.sb_socket, SOL_SOCKET, SO_RCVTIMEO, (char *) &tv, sizeof(tv))) {
RTMP_Log(RTMP_LOGERROR, "%s, Setting socket timeout to %ds failed!",
__FUNCTION__, HTTP_TIMEOUT);
}
}
sb.sb_size = 0;
sb.sb_timedout = FALSE;
if (RTMPSockBuf_Fill(&sb) < 1) {
ret = HTTPRES_LOST_CONNECTION;
goto leave;
}
if (strncmp(sb.sb_buf, "HTTP/1", 6)) {
ret = HTTPRES_BAD_REQUEST;
goto leave;
}
p1 = strchr(sb.sb_buf, ' ');
rc = atoi(p1 + 1);
http->status = rc;
if (rc >= 300) {
if (rc == 304) {
ret = HTTPRES_OK_NOT_MODIFIED;
goto leave;
}
else if (rc == 404)
ret = HTTPRES_NOT_FOUND;
else if (rc >= 500)
ret = HTTPRES_SERVER_ERROR;
else if (rc >= 400)
ret = HTTPRES_BAD_REQUEST;
else
ret = HTTPRES_REDIRECTED;
}
p1 = memchr(sb.sb_buf, '\n', sb.sb_size);
if (!p1) {
ret = HTTPRES_BAD_REQUEST;
goto leave;
}
sb.sb_start = p1 + 1;
sb.sb_size -= sb.sb_start - sb.sb_buf;
while ((p2 = memchr(sb.sb_start, '\r', sb.sb_size))) {
if (*sb.sb_start == '\r') {
sb.sb_start += 2;
sb.sb_size -= 2;
break;
}
else if (!strncasecmp
(sb.sb_start, "Content-Length: ", sizeof("Content-Length: ") - 1)) {
flen = atoi(sb.sb_start + sizeof("Content-Length: ") - 1);
}
else if (!strncasecmp
(sb.sb_start, "Last-Modified: ", sizeof("Last-Modified: ") - 1)) {
*p2 = '\0';
strcpy(http->date, sb.sb_start + sizeof("Last-Modified: ") - 1);
}
p2 += 2;
sb.sb_size -= p2 - sb.sb_start;
sb.sb_start = p2;
if (sb.sb_size < 1) {
if (RTMPSockBuf_Fill(&sb) < 1) {
ret = HTTPRES_LOST_CONNECTION;
goto leave;
}
}
}
len_known = flen > 0;
while ((!len_known || flen > 0) &&
(sb.sb_size > 0 || RTMPSockBuf_Fill(&sb) > 0)) {
cb(sb.sb_start, 1, sb.sb_size, http->data);
if (len_known)
flen -= sb.sb_size;
http->size += sb.sb_size;
sb.sb_size = 0;
}
if (flen > 0)
ret = HTTPRES_LOST_CONNECTION;
leave:
RTMPSockBuf_Close(&sb);
return ret;
}
HTTPResult
HTTP_get(struct HTTP_ctx *http, const char *url, HTTP_read_callback *cb)
{
char *host, *path;
char *p1, *p2;
char hbuf[256];
int port = 80;
#ifdef CRYPTO
int ssl = 0;
#endif
int hlen, flen = 0;
int rc, i;
int len_known;
HTTPResult ret = HTTPRES_OK;
struct sockaddr_in sa;
RTMPSockBuf sb = {0};
http->status = -1;
memset(&sa, 0, sizeof(struct sockaddr_in));
sa.sin_family = AF_INET;
/* we only handle http here */
if (strncasecmp(url, "http", 4))
return HTTPRES_BAD_REQUEST;
if (url[4] == 's')
{
#ifdef CRYPTO
ssl = 1;
port = 443;
if (!RTMP_TLS_ctx)
RTMP_TLS_Init();
#else
return HTTPRES_BAD_REQUEST;
#endif
}
p1 = strchr(url + 4, ':');
if (!p1 || strncmp(p1, "://", 3))
return HTTPRES_BAD_REQUEST;
host = p1 + 3;
path = strchr(host, '/');
hlen = path - host;
strncpy(hbuf, host, hlen);
hbuf[hlen] = '\0';
host = hbuf;
p1 = strrchr(host, ':');
if (p1)
{
*p1++ = '\0';
port = atoi(p1);
}
sb.sb_tcp = tcp_connect(host, port, NULL, 0, 5000, ssl ? TCP_SSL : 0, NULL);
if(sb.sb_tcp == NULL)
return HTTPRES_LOST_CONNECTION;
i =
sprintf(sb.sb_buf,
"GET %s HTTP/1.0\r\nUser-Agent: %s\r\nHost: %s\r\nReferer: %.*s\r\n",
path, AGENT, host, (int)(path - url + 1), url);
if (http->date[0])
i += sprintf(sb.sb_buf + i, "If-Modified-Since: %s\r\n", http->date);
i += sprintf(sb.sb_buf + i, "\r\n");
RTMPSockBuf_Send(&sb, sb.sb_buf, i);
tcp_set_read_timeout(sb.sb_tcp, 5000);
sb.sb_size = 0;
sb.sb_timedout = FALSE;
if (RTMPSockBuf_Fill(&sb) < 1)
{
ret = HTTPRES_LOST_CONNECTION;
goto leave;
}
if (strncmp(sb.sb_buf, "HTTP/1", 6))
{
ret = HTTPRES_BAD_REQUEST;
goto leave;
}
p1 = strchr(sb.sb_buf, ' ');
rc = atoi(p1 + 1);
http->status = rc;
if (rc >= 300)
{
if (rc == 304)
{
ret = HTTPRES_OK_NOT_MODIFIED;
goto leave;
}
else if (rc == 404)
ret = HTTPRES_NOT_FOUND;
else if (rc >= 500)
ret = HTTPRES_SERVER_ERROR;
else if (rc >= 400)
ret = HTTPRES_BAD_REQUEST;
else
ret = HTTPRES_REDIRECTED;
}
p1 = memchr(sb.sb_buf, '\n', sb.sb_size);
if (!p1)
{
ret = HTTPRES_BAD_REQUEST;
goto leave;
}
sb.sb_start = p1 + 1;
sb.sb_size -= sb.sb_start - sb.sb_buf;
while ((p2 = memchr(sb.sb_start, '\r', sb.sb_size)))
{
if (*sb.sb_start == '\r')
{
sb.sb_start += 2;
sb.sb_size -= 2;
break;
}
else
if (!strncasecmp
(sb.sb_start, "Content-Length: ", sizeof("Content-Length: ") - 1))
{
flen = atoi(sb.sb_start + sizeof("Content-Length: ") - 1);
}
else
if (!strncasecmp
(sb.sb_start, "Last-Modified: ", sizeof("Last-Modified: ") - 1))
{
*p2 = '\0';
strcpy(http->date, sb.sb_start + sizeof("Last-Modified: ") - 1);
}
p2 += 2;
sb.sb_size -= p2 - sb.sb_start;
sb.sb_start = p2;
if (sb.sb_size < 1)
{
if (RTMPSockBuf_Fill(&sb) < 1)
{
ret = HTTPRES_LOST_CONNECTION;
goto leave;
}
}
}
len_known = flen > 0;
while ((!len_known || flen > 0) &&
(sb.sb_size > 0 || RTMPSockBuf_Fill(&sb) > 0))
{
cb(sb.sb_start, 1, sb.sb_size, http->data);
if (len_known)
flen -= sb.sb_size;
http->size += sb.sb_size;
sb.sb_size = 0;
}
if (flen > 0)
ret = HTTPRES_LOST_CONNECTION;
leave:
RTMPSockBuf_Close(&sb);
return ret;
}
